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Re: st: Tests for trends in RCT subgroups (-metan-, -meta-, other?)
There's a Stata faq on tests for trend that is well worth reading:
Not completely clear from your description of the problem but i doubt that
meta-analysis commands are the way to go.
--On 10 June 2005 15:45 +0100 Matthew Sydes <Matthew.Sydes@ctu.mrc.ac.uk>
[Using Stata 8; impending upgrade to Stata 9]
I am interested in performing tests of trend in ordered subgroups from a
single randomised controlled trial. It is possible to use meta-analysis
commands for this purpose, pretending that each subgroup is a separate
trial. I have investigated the -meta- and -metan- commands. However,
their tests for heterogeneity only seem to deal in global tests rather
than tests for trends.
Like numbers-at-risk on KM plots, subgroup trend tests are an issue I
often wrangle with and find that I can solve only outside of Stata (albeit
somewhat unsatisfactorily and unloggable fashion).
Any help on how I may address this matter within Stata would be much
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